Low-speed large-torque hydraulic motor system based on internal gear shaft transmission
A low-speed, high-torque, hydraulic motor technology, applied in the direction of servo motors, servo motor components, fluid pressure actuators, etc., can solve the problems of increasing the complexity of hydraulic control circuits and hydraulic motor working systems, and achieve simple and reliable hydraulic control principles , easy to lock, and increase the effect of output torque
Active Publication Date: 2021-08-27
ZHEJIANG UNIV
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Problems solved by technology
The expansion and contraction sequence of each plunger is regulated by control elements such as hydraulic valves, which also increases the complexity of the hydraulic control circuit and the working system of the hydraulic motor
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[0028] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0029] Such as figure 1 with figure 2 As shown, the present invention includes a mechanical transmission mechanism and a hydraulic control circuit, the mechanical transmission mechanism is the main part of the present invention, and the mechanical transmission mechanism and the hydraulic control circuit are connected through joints and hoses;
[0030] The mechanical transmission mechanism includes an outer casing, a cylinder body 1, several transmission structures and an internal gear shaft 5, the cylinder body 1, the transmission structure and the internal gear shaft 5 are all located in the outer casing, and the cylinder body 1 is coaxially and fixedly installed on the internal gear shaft 5 In the figure, a plurality of stepped cylindrical through-holes are evenly spaced along the axial direction of the cylinder body 1. For the sake of s...
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The invention discloses a low-speed large-torque hydraulic motor system based on internal gear shaft transmission. The low-speed large-torque hydraulic motor system based on internal gear shaft transmission comprises a mechanical transmission mechanism and a hydraulic control loop, the mechanical transmission mechanism and a hydraulic control loop are connected, the mechanical transmission mechanism comprises an outer shell body, a cylinder body, a plurality of transmission structures and an inner gear shaft, the cylinder body, the transmission structures and the inner gear shaft are all located in the outer shell body, the cylinder body is coaxially and fixedly installed in the inner gear shaft, a plurality of stepped cylindrical through holes are evenly formed in the axial direction of the cylinder body at intervals, each stepped cylindrical through hole is formed in the radial direction of the cylinder body, each stepped cylindrical through hole is connected with the inner wall of the inner gear shaft through one transmission structure, and each cylindrical cavity communicates with a respective hydraulic control loop. According to the low-speed large-torque hydraulic motor system based on internal gear shaft transmission, a double-acting type hydraulic cylinder and an internal gear mechanism are integrated in the hydraulic motor, the output rotating speed of the hydraulic motor is reduced by means of the large speed reduction ratio characteristic of internal gear transmission, and the output torque is further improved by means of simultaneous meshing of a plurality of sets of external gears and an internal gear.
Description
technical field [0001] The invention belongs to the technical field of hydraulic motor design and control, and specifically relates to a hydraulic motor system that uses a double-acting hydraulic cylinder as a driving element and relies on the large reduction ratio characteristics of internal gear shaft transmission to obtain low output speed and large output torque. Background technique [0002] As a hydraulic actuator that outputs rotary motion, hydraulic motors can be divided into two categories: high-speed hydraulic motors and low-speed hydraulic motors according to their rated speeds. The low-speed hydraulic motor mainly adopts a radial plunger structure, which has the characteristics of low speed and high output torque. The working characteristics of the radial piston hydraulic motor are reliable, but its output speed and output torque are often limited by the structural size, and it needs to be connected with the corresponding reduction gear to obtain a further reduct...
Claims
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IPC IPC(8): F15B15/06F15B13/044F15B11/08
CPCF15B15/063F15B13/044F15B11/08F15B2013/0448F15B2211/205
Inventor 王林翔韩宇翔
Owner ZHEJIANG UNIV